Yenah (really_bad_at_typing_)

Race #321

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Official speed 45.89 wpm (74.00 seconds elapsed during race)
Race Start December 20, 2018 7:14:58pm UTC
Race Finish December 20, 2018 7:16:12pm UTC
Outcome Win (1 of 5)
Accuracy 92.0%
Points 34.42
Text #4060102 (Length: 283 characters)

Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.